Thursday, June 25, 2015

Nearby Life

Planetary scientist Nathalie Cabrol of the SETI Institute thinks life on Earth may have originated on Mars. Over three billion years ago, during the Late Heavy Bombardment, she thinks life could have traveled between a warmer, wetter Mars and Earth inside rocks thrown away from their mother worlds.

She also thinks life in the outer Solar System is possible, but it would have a different origin.